GB/CB/1907 Extreme version, Enter country Enter ship type laid down 1907 (Engine 1927)
Displacement:
24,322 t light; 25,076 t standard; 27,500 t normal; 29,439 t full load
Dimensions: Length overall / water x beam x draught
770.00 ft / 770.00 ft x 80.00 ft x 28.00 ft (normal load)
234.70 m / 234.70 m x 24.38 m x 8.53 m
Armament:
4 - 12.00" / 305 mm guns (2x2 guns), 864.00lbs / 391.90kg shells, 1907 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread
9 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1907 Model
Quick firing guns in deck mounts with hoists
on side, all amidships
Weight of broadside 4,428 lbs / 2,009 kg
Shells per gun, main battery: 80
Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 5.00" / 127 mm 660.00 ft / 201.17 m 8.00 ft / 2.44 m
Ends: Unarmoured
Upper: 5.00" / 127 mm 400.00 ft / 121.92 m 8.00 ft / 2.44 m
Main Belt covers 132 % of normal length
Main belt does not fully cover magazines and engineering spaces
- Torpedo Bulkhead:
1.50" / 38 mm 660.00 ft / 201.17 m 26.00 ft / 7.92 m
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 7.00" / 178 mm 4.00" / 102 mm 7.00" / 178 mm
2nd: 2.00" / 51 mm - -
- Armour deck: 2.00" / 51 mm, Conning tower: 5.00" / 127 mm
Machinery:
Oil fired boilers, steam turbines,
Direct drive, 4 shafts, 263,437 shp / 196,524 Kw = 37.00 kts
Range 6,500nm at 18.00 kts
Bunker at max displacement = 4,363 tons
Complement:
1,067 - 1,388
Cost:
£2.480 million / $9.922 million
Distribution of weights at normal displacement:
Armament: 554 tons, 2.0 %
Armour: 5,130 tons, 18.7 %
- Belts: 1,755 tons, 6.4 %
- Torpedo bulkhead: 952 tons, 3.5 %
- Armament: 722 tons, 2.6 %
- Armour Deck: 1,603 tons, 5.8 %
- Conning Tower: 98 tons, 0.4 %
Machinery: 8,316 tons, 30.2 %
Hull, fittings & equipment: 10,323 tons, 37.5 %
Fuel, ammunition & stores: 3,178 tons, 11.6 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
27,785 lbs / 12,603 Kg = 32.2 x 12.0 " / 305 mm shells or 3.0 torpedoes
Stability (Unstable if below 1.00): 1.24
Metacentric height 5.3 ft / 1.6 m
Roll period: 14.6 seconds
Steadiness - As gun platform (Average = 50 %): 59 %
- Recoil effect (Restricted arc if above 1.00): 0.46
Seaboat quality (Average = 1.00): 1.17
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.558
Length to Beam Ratio: 9.63 : 1
'Natural speed' for length: 27.75 kts
Power going to wave formation at top speed: 60 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): -1.00 degrees
Stern overhang: -1.00 ft / -0.30 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 34.00 ft / 10.36 m
- Forecastle (20 %): 31.00 ft / 9.45 m
- Mid (73 %): 31.00 ft / 9.45 m (23.00 ft / 7.01 m aft of break)
- Quarterdeck (15 %): 23.00 ft / 7.01 m
- Stern: 23.00 ft / 7.01 m
- Average freeboard: 29.08 ft / 8.86 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 150.8 %
- Above water (accommodation/working, high = better): 228.3 %
Waterplane Area: 43,315 Square feet or 4,024 Square metres
Displacement factor (Displacement / loading): 105 %
Structure weight / hull surface area: 142 lbs/sq ft or 692 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.94
- Longitudinal: 1.68
- Overall: 1.00
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
This is a forum for discussion of topics relating to the Dreadnought era, prior to the ascendency of naval aviation. We will be discussing history, ship design, and naval wargaming.
Tuesday, June 21, 2005
By giving a little on protection, 37 knots is possible
This is a slight revision to the extreme version of the GB/CB/1907 so that 37 knots can be achieved. A modest reduction in protection makes it possible, along with slightly higher output machinery.
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